Front bumper



FIG. 1 is a front view of a front bumper showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left side perspective view thereof; and,

FIG. 6 is a right side perspective view thereof.

It will be understood that the broken lines shown in the drawings illustrate portions of the front bumper that form no part of claimed design. 

CLAIM The ornamental design for an front bumper, as shown and described. 